lte volte - Microsoft Community


i have windows lumia 638 single sim lte mobile
i use internet on mobile cannot use calling

it jio support volte on windows phones.

t-mobile in czech republic supports volte on windows phones app , sim with no update microsoft required.

link volte information. can not provide translated page because secure https.

https://www.t-mobile.cz/volte support microsoft lumia550, 640 lte, 650, 950, 950 xl directly, no firmware update required, app.

your problem jio, not microsoft seen example below.

link in forum user used t-mobile in czech republic sim , mad app installed , changed phone. did not understand getting volte.

https://answers.microsoft.com/en-us/mobiledevices/forum/mdlumia-mdupdate/unbranded-lumia-640-lte-wp-81-and-wp-10-problem/30e21aa1-e814-4ae7-b6ff-dc2f2ef144fc



Mobile Devices / Microsoft Lumia and Nokia Lumia



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